diff --git a/README.md b/README.md
index 5107c5d..66b4609 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 
 ```shell
 yarn
+yarn download
 yarn build
 yarn test
 ```
@@ -11,3 +12,10 @@ yarn test
 TODO
 
 1. deposit from mainnet to the pool on optimism in one tx
+
+## Useful
+
+How we do transaction inside pool of A amount.
+1. sort inputs by amount
+2. try to take 1 or 2 smallest inputs to satisfy A amount. Get 16 inputs if it's not possible using the same way
+3. Also you can always use transaction to merge your inputs with change (especially in 16 inputs case)
diff --git a/TODO b/TODO
deleted file mode 100644
index cb9c882..0000000
--- a/TODO
+++ /dev/null
@@ -1,9 +0,0 @@
-* relayer
-* design
-* race condition ? (sequencer or something)
-* the current trusted setup is not secure ?
-
-How we do transaction inside pool of A amount.
-1. sort inputs by amount
-2. try to take 1 or 2 smallest inputs to satisfy A amount. Get 16 inputs if it's not possible using the same way
-3. Also you can always use transaction to merge your inputs with change (especially in 16 inputs case)